mail.nemborn.com has no NS records.
NS records for this zone are defined at nemborn.com.
NS records for this zone are defined at nemborn.com.
Question and response
Question
dig mail.nemborn.com. NS
Answer
The response has no answer records.
Authority
nemborn.com. 300 SOA ns.dandomain.dk. hostmaster.dandomain.dk. 2026011601 14400 3600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0